Daylight Saving Time in the U.S. begins earlier and ends later starting this year - which means your PC might not set its clock correctly when the time comes.

Microsoft's published a list of products "affected" by the new DST period which includes Windows XP and Outlook. To make sure your Outlook appointments and system clock isn't an hour off starting on March 11, Microsoft's offering a Time Zone Update tool as a free download. Additionally, hit up Microsoft's online wizard to get your XP PC up to speed on the new time change period. Photo by lukasd2009. — Gina Trapani